Fetal Audition

Busnel, Marie‐Claire; Granier-Deferre, Carolyn; Lecanuet, Jean-Pierre

doi:10.1111/j.1749-6632.1992.tb22857.x

Cited by 34 publications

(26 citation statements)

References 65 publications

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“…Newborns are exposed to sounds and noises which they did not hear in utero [1,2]. Noise exposure can affect health and cochlear function [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Use of Sound-Absorbing Panel to Reduce Noisy Incubator Reverberating Effects

Bellieni

Buonocore²,

Pinto³

et al. 2003

Neonatology

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Objectives: To assess the amplification and distortion of noise in incubators by measuring noise levels from various sources under various conditions. Study Design: We recorded sound pressure levels (SPL) of background noise, baby crying, alarms and porthole closing with the incubator hood open or closed. Then we tried to reduce the sound level in the incubator by applying a sound absorbing panel to the ceiling of the hood. Results: The sound sources analysed produced very high SPL. In free field baby crying and porthole noise were, respectively, 81–83 dB and 70–71 dB, closing the hood they raised to 84–87 and 73–74 dB: this means that the noise perceived by a baby in the incubator had twice the SPL of the same noise emitted in a free field; alarm noise was 56–57 dB inside incubators. Sound emitted inside the hood was also distorted, i.e. it had different features from the same source in a free field. The insulating panel prevented amplification and distortion due to the hood and reduced the SPL of alarms. Only background noise did not decrease with the panel. Sound absorbing panel reduced baby’s crying, porthole noise and alarm noise SPL to 82–85, 70–71 and 50–51 dB, respectively. Conclusions: Incubators are reverberating environments, which amplify the baby’s cry and other noises produced inside the hood. The frequency components of noises are altered by the hood. The sound absorbing panel reduced this phenomenon.

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“…Newborns are exposed to sounds and noises which they did not hear in utero [1,2]. Noise exposure can affect health and cochlear function [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Use of Sound-Absorbing Panel to Reduce Noisy Incubator Reverberating Effects

Bellieni

Buonocore²,

Pinto³

et al. 2003

Neonatology

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“…Thus IUGR as a determinant of LBW and subsequent development is an indication of the state of the mother's health and nutrition during pregnancy. IGUR has an impact on the brain development of the fetus since every mode of sensory experience except vision is active in the fetus during the last trimester of human pregnancy [20]. Hence the need for maternal care is imperative for the prevention of LBW.…”

Section: Discussionmentioning

confidence: 99%

Recognition and Recall in Low Birth Weight Infants

Ittyerah¹,

Mangapalli²

2009

TOPSYJ

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Cognitive abilities of low birth weight infants (1500-2000 grams) were compared to that of normal controls (2500-3500 grams) in tasks using recognition and recall measures. Three groups of infants at different ages: group I (4-6 months), group II (7-9 months), and group III (10-12 months), each consisting of 30 low birth weight and 30 controls participated in the study.Infants of group I were tested for fundamental sensory abilities such as visual recognition memory, auditory and tactile preferences. Infants of group II were tested on tasks of imitation and object permanence, both requiring some form of representation and recall abilities. Infants of group III were tested on inter-modal matching, which required ability for sensory integration. Results indicate that the low birth weight infants performed poorly on all tasks except tactile preferences. They seem to lag behind the normal infants in general, and in some tasks by approximately four weeks. This suggests the importance of brain maturation for the performance of these tasks since previous studies indicate a relationship between birth weight and cognitive performance. Thus intra-uterine growth retardation (IGUR) consequently delays development and is an important determinant of low birth weight.

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“…D'après les études expérimentales rapportées par Busnel et al [10], des stimulations de haute intensité (au-delà de 105 dB) peuvent générer des réponses à partir de 24 SA. Ces réponses seraient uniformément retrouvées à 28 SA, avec un effet somatocardiaque à ces stimuli représenté par une accélération de la fréquence cardiaque.…”

Section: Résultats Des éTudes Expérimentalesunclassified

“…Le niveau moyen du bruit de fond intra-utérin, loin du placenta, est de 28 dB. Il a sa plus forte énergie à des niveaux de fréquence très bas en dessous de 40 Hz [10].…”

Section: Environnement Sonore Naturel Du Foetusunclassified

Audition fœtale. Mythe ou réalité ?

Chelli

Chanoufi

2008

Journal de Gynécologie Obstétrique et Biologie de la Reproducti

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Fetal Audition

Cited by 34 publications

References 65 publications

Use of Sound-Absorbing Panel to Reduce Noisy Incubator Reverberating Effects

Use of Sound-Absorbing Panel to Reduce Noisy Incubator Reverberating Effects

Recognition and Recall in Low Birth Weight Infants

Audition fœtale. Mythe ou réalité ?

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